Mostrando 61 - 80 Resultados de 591 Para Buscar '"supernova"', tiempo de consulta: 0.11s Limitar resultados
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    por Perlmutter, Saul
    Publicado 1999
    “…Based on an analysis of 42 high-redshift supernovae discovered by the supernovae cosmology project, we have found evidence for a positive cosmological constant, Lambda, and hence an accelerating universe. …”
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  8. 68
    por Kachelriess, Michael
    Publicado 2001
    “…Different approximations for the survival probability of supernova neutrinos are compared. Results of a combined likelihood analysis of the observed SN1987A neutrino signal and of the latest solar neutrino data including the recent SNO CC measurement are presented.…”
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    por Kondratev, V N
    Publicado 2002
    “…Implications in the synthesis of r-process nuclei in supernova site are discussed.…”
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  13. 73
    por Danziger, I J, Clark, D H, Wood, R
    Publicado 1980
    “…A preliminary ultraviolet spectrum secured from the IUE satellite, of a bright filament in the Vela supernova remnant, displays both emission-line and continuum components. …”
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  14. 74
    por Dennefeld, M
    Publicado 1978
    “…In adopting a mean value of E/sub 0//n/sub 0/ (energy at explosion over surrounding density) of 5*10/sup 51/ ergs cm/sup 3/, the best value of tau is 300+or-100 years in good agreement with predictions from statistics of supernovae in external galaxies. The small number of remnants in the SMC prevents a similar approach being used with any statistical significance. (20 refs).…”
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    “…It also requires an asymmetric distribution of neutrinos emitted from the supernova. The subsequent chemical evolution and galactic mixing would ultimately populate the Galaxy with the selected species. …”
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